행안부 주소 검색 OPEN API - Flutter

adFlutter.dart

import 'dart:io';
import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
/// [pub] webview_flutter: ^2.0.10 : https://pub.dev/packages/webview_flutter

void main() => runApp(Sys());

class Sys extends StatelessWidget {
  const Sys({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(home: Main());
  }
}

class Main extends StatefulWidget {
  const Main({Key? key}) : super(key: key);

  @override
  _MainState createState() => _MainState();
}

class _MainState extends State<Main> {

  String? title;

  @override
  void initState() {
    if (Platform.isAndroid) WebView.platform = SurfaceAndroidWebView();
    super.initState();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Container(
        width: MediaQuery.of(context).size.width,
        child: Column(
          mainAxisAlignment: MainAxisAlignment.spaceAround,
          children: [
            Container(
              padding: EdgeInsets.all(10.0),
              child: Text(this.title ?? "검색 내용이 없습니다")
            ),
            TextButton(
              child: Text("검색"),
              onPressed: () => Navigator.of(context).push(
                MaterialPageRoute(
                  builder: (BuildContext context){
                    final String _key = "발급받은 키를 넣어주세요";
                    final String _url = "http://NODEJS IP를 넣어주세요:3000";
                    return Scaffold(
                      body: SafeArea(
                        child: WebView(
                          initialUrl: "https://www.juso.go.kr/addrlink/addrMobileLinkUrl.do?confmKey=$_key&returnUrl=$_url",
                          javascriptMode: JavascriptMode.unrestricted,
                          javascriptChannels: {
                            JavascriptChannel(name:'james', onMessageReceived: (JavascriptMessage msg){
                              setState(() => this.title = msg.message);
                              Navigator.of(context).pop();
                            })
                          },
                        ),
                      ),
                    );
                  }
                )
              ),
            ),
          ],
        ),
      )
    );
  }
}